Precision Metal Stamping Parts Processing Hardware Stamping Parts

The ratio d/t of punching diameter to material thickness in stamping processing can reach the following values: 0.4 for hard steel, 0.35 for mild steel and brass, and 0.3 for aluminum.

When punching small holes on the plate, when the thickness of the material is greater than the diameter of the punch, the punching process is not a shearing process, but a process of extruding the material into the die through the punch. At the beginning of extrusion, a part of the punched scrap is compressed and squeezed into the surrounding area of ​​the hole, so the thickness of the punched scrap is generally smaller than the thickness of the raw material.

When punching small holes in stamping parts, due to the small diameter of the punching punch, if the punch is punched by ordinary methods, the small punch is easy to break, so try to improve the strength of the punch to prevent it from breaking and bending. The methods and things to pay attention to are:

1. The stripping plate doubles as a guide plate.

2. A small guide column guide sleeve is used between the guide plate and the fixed work plate, or it is directly connected with the large guide column guide sleeve.

3. The punch is retracted into the guide plate, and the distance between the guide plate and the punch fixing plate should not be too large.

4. The bilateral gap between the punch and the guide plate is smaller than the unilateral gap between the punch and the concave die.

5. The pressing force should be increased by 1.5 to 2 times compared with the simple stripping.

6. The guide plate is made of or inlaid with high hardness material, which is 20% to 30% thicker than usual.

7. The connection between the two guide posts passes through the workpiece pressure.

8. During multi-hole punching, the punch with a smaller diameter is one material thicker than the punch with a larger diameter.

Nanpi Haoxinyuan Technology Co., Ltd. was established in 2018. We focus on metallic parts OEM and do contract part fabrications to our customers.Our company is located in cangzhou city, hebei Province.Haoxinyuan pay much attention on our product process control and process management. Our company is TS16949 certified.

Haoxinyuan has a professional and experienced working team dedicated to metal parts fabrications. Our strengths and specialties is Processing and production of metal stamping parts, and we provides a one-stop service, including mold production, stamping production, surface treatment and assembly.

Our products sell well in Africa, Middle East, Southeast Asia, Europe, North America and other places. Anyone who works with us is proud of our good after sales service and open attitude.